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Old May 11, 2013   #29
NathanP
Tomatovillian™
 
Join Date: May 2013
Location: RI
Posts: 183
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Yes that is correct. The only way this will work is to find potato lines that set tubers along stolons. Nearly all commercial varieties have been bred to NOT do this.

Traits to look for:
Long season/late season
high setting tubers, close to the ground or above ground level
traditional landraces
wilder types

A couple of good starting places seem to be growing from TPS sold by www.tomwagnerseeds.com
http://www.newworldcrops.com/zen/, or the Kenosha Potato Project http://www.curzio.com/N/PotatoProject.htm

For height, no you do not need 4'. I opted for 3.5' high with mine, but that was probably based more on amount of available lumber that I had on hand.
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